Condensed Consolidated Statement of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating Activities:
Net loss	$ (342)	$ (2,752)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,914	3,945
Gain on bargain purchase of acquisition		(54)
Stock based compensation	2,523	3,475
Share based expense	89
Loss on disposal/sale of property and equipment		(16)
Restructuring costs		178
Payment of withholding tax on stock based compensation	(1,226)	(809)
Deferred tax assets		(166)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	161	(2,435)
Inventories	(2,859)	(1,738)
Prepaid expenses and other assets	1,728	(1,341)
Accounts payable	843	2,219
Income taxes payable	(17)	(261)
Other accrued liabilities	(635)	1,240
Deferred revenue	(406)	715
Net cash provided by operating activities	3,773	2,200
Investing Activities:
Capital expenditures	(4,146)	(885)
Proceeds from disposal of property and equipment		10
Purchase of investments	(41,213)	(22,252)
Redemptions/maturities of short-term investments	41,203	17,650
Purchase of assets/businesses, net of cash acquired		(2,109)
Net cash used in investing activities	(4,156)	(7,586)
Financing Activities:
Proceeds from issuance of common stock	569	468
Payments for repurchase of common stock	(2,559)	(3,588)
Net cash used in financing activities	(1,990)	(3,120)
Net decrease in cash and cash equivalents	(2,373)	(8,506)
Effect of exchange rate changes on cash	30	14
Cash and cash equivalents, beginning of year	23,998	35,543
Cash and Cash Equivalents, End of Period	$ 21,655	$ 27,051